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Science-Related Homework Help Statistics and Probability Topic started by: kdkrenik on Mar 3, 2018



Title: Find the z-score having area 0.86 to its right under the standard normal curve; that is, find z 0.86 ...
Post by: kdkrenik on Mar 3, 2018
Find the z-score having area 0.86 to its right under the standard normal curve; that is, find z 0.86 .
 
  A) -1.08 B) 1.08 C) 0.8051 D) 0.5557

Q. 2

The mean monthly gasoline bill for one household is greater than 120. If a hypothesis test is performed, how should you interpret a decision that fails to reject the null hypothesis?
 
  A) There is not sufficient evidence to support the claim  > 120.
  B) There is sufficient evidence to reject the claim  > 120.
  C) There is not sufficient evidence to reject the claim  > 120.
  D) There is sufficient evidence to support the claim  > 120.

Q. 3

To avoid working late, the plant foreman inspects the first 20 microwaves produced that day. What sampling technique was used?
 
  A) convenience
  B) simple random
  C) cluster
  D) stratified
  E) systematic

Q. 4

The mean monthly gasoline bill for one household is greater than 120. If a hypothesis test is performed, how should you interpret a decision that rejects the null hypothesis?
 
  A) There is sufficient evidence to support the claim  > 120.
  B) There is sufficient evidence to reject the claim  > 120.
  C) There is not sufficient evidence to reject the claim  > 120.
  D) There is not sufficient evidence to support the claim  > 120.

Q. 5

A market researcher randomly selects 200 homeowners under 65 years of age and 200 homeowners over 65 years of age. What sampling technique was used?
 
  A) stratified
  B) simple random
  C) cluster
  D) convenience
  E) systematic

Q. 6

A sample consists of every 30th worker from a group of 1000 workers. What sampling technique was used?
 
  A) systematic
  B) simple random
  C) cluster
  D) stratified
  E) convenience

Q. 7

Sixty-five percent of men consider themselves knowledgeable soccer fans. If 13 men are randomly selected, find the probability that exactly five of them will consider themselves knowledgeable fans.
 
  A) 0.034 B) 0.215 C) 0.65 D) 0.385

Q. 8

The mean age of judges in Dallas is greater than 58.8 years. If a hypothesis test is performed, how should you interpret a decision that fails to reject the null hypothesis?
 
  A) There is not sufficient evidence to support the claim  > 58.8.
  B) There is sufficient evidence to reject the claim  > 58.8.
  C) There is not sufficient evidence to reject the claim  > 58.8.
  D) There is sufficient evidence to support the claim  > 58.8.


Title: Find the z-score having area 0.86 to its right under the standard normal curve; that is, find z 0.86 ...
Post by: b1984 on Mar 3, 2018
Answer to #1

A

Answer to #2

A

Answer to #3

A

Answer to #4

A

Answer to #5

A

Answer to #6

A

Answer to #7

A

Answer to #8

A


Title: Find the z-score having area 0.86 to its right under the standard normal curve; that is, find z 0.86 ...
Post by: kdkrenik on Mar 3, 2018
Ready for finals now :monkey:


Title: Find the z-score having area 0.86 to its right under the standard normal curve; that is, find z 0.86 ...
Post by: b1984 on Mar 3, 2018
Good luck my friend!